I played with the lpi one for a couple of dives and the delivery was comfortably regulated and exhalation manageable. The thing was to remember to loosen your bite before the lungs reach capacity. I should say, a couple of times over a couple of dives.
Then I figured that if your buddy was trapped in another compartment of a wreck you could cold chisel or wrench out a rivet or a bolt and poke the Air Buddy if it were on a hose through. But because I generally don't carry a cold chisel or a wrench or a buddy I put it in one of my compartmentalised cases with a lot of other interesting diving gadgets.
Then I figured that if your buddy was trapped in another compartment of a wreck you could cold chisel or wrench out a rivet or a bolt and poke the Air Buddy if it were on a hose through. But because I generally don't carry a cold chisel or a wrench or a buddy I put it in one of my compartmentalised cases with a lot of other interesting diving gadgets.